package com.itheima.Config;

import com.itheima.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;

@Slf4j
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {
    /*
    设置静态资源映射
    @prarm registry
     */

    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        log.info("开始进行静态资源映射");
        //静态资源映射
        registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
        registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
    }

    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        //创建消息转换器对象
        MappingJackson2HttpMessageConverter messageConverter=new MappingJackson2HttpMessageConverter();
        //设置对象转换器对象，底层使用jackson将java对象转为json
        messageConverter.setObjectMapper(new JacksonObjectMapper());
        //将上面的信息转换器对象追加到mv框架的转换集合中
        converters.add(0,messageConverter);
    }
}
